SBOU279A March   2022  – November 2022 INA241A , INA241B

 

  1.    INA241EVM Abstract
  2.   Trademarks
  3. 1General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
  4. 2Overview
    1. 2.1 EVM Kit Contents
    2. 2.2 Related Documentation From Texas Instruments
  5. 3Hardware
    1. 3.1 Features
  6. 4Operation
    1. 4.1 Quick Start Setup
    2. 4.2 Measurements
  7. 5EVM Components
    1. 5.1 R1_n, R2_n, R3_n, C2_n, C5_n
    2. 5.2 C1_n
    3. 5.3 R4_n
    4. 5.4 U1_n (INA241x)
  8. 6Schematic, PCB Layout, and Bill of Materials
    1. 6.1 Schematic
    2. 6.2 PCB Layout
    3. 6.3 Bill of Materials
  9. 7Revision History

4.1 Quick Start Setup

Follow these procedures to set up and use one of the INA241EVM panels. For these instructions, n is gain option 1, 2, 3, 4, or 5.

  1. Choose the desired gain option panel variation.
  2. Connect an external DC supply voltage (between 2.7 V and 20 V) to a VS test point. Connect the ground reference of that supply to a GND test point on the same panel.
  3. Provide a differential input voltage signal to the Vin+ and Vin– nodes by connecting the signal leads to the J1_n and J2_n on the EVM, as explained in Section 4.2. The IN241x is a bidirectional current-sensing device that has a reference pin. With this reference pin, the device can measure current in both directions. To use 1/2 of the supply voltage (VS) as the reference, place shorting bars on jumper J4, connect REF1 to VS and J5, and connect REF2 to GND. If you only want to measure unidirectional current, be careful not to short VS to GND. Remove the jumpers from J4 and J5 before placing a jumper on J6. After J6 shorts Ref1 to Ref2, place one jumper on J4 or J5 or drive the Ref1 and Ref2 pins to create your own reference voltage.